Results 51 to 60 of about 273,008 (258)

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

FEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke, Michal Banasik, Rokas Juodeikis, Martin J. Warren, Richard W. Pickersgill   +4 more
wiley   +1 more source

Reversible Loss of Bernal Stacking during the Deformation of Few-Layer Graphene in Nanocomposites [PDF]

, 2013
The deformation of nanocomposites containing graphene flakes with different numbers of layers has been investigated with the use of Raman spectroscopy. It has been found that there is a shift of the 2D band to lower wavenumber and that the rate of band ...
Novoselov, Kostya S., Li, L, Hinks, JA, Young, Robert J., Haigh, SJ, Warner, JH, Warner, Jamie H., Gong, Lei, Jalil, Rashid, Hinks, Jonathan A., Ding, Feng, Jalil, R, Xu, ZW, Li, Li, Xu, Z, Novoselov, KS, Riaz, Ibtsam, Ding, F, Haigh, Sarah J., Young, Robert J.; id_orcid, Haigh, Sarah J.; id_orcid, Kinloch, Ian A., Kinloch, IA, Gong, L, Xu, Ziwei, Young, RJ, Riaz, I   +26 more
core   +1 more source

Crystal structure of (μ-N-allylthiourea-κ2S:S)bis[μ-bis(diphenylphosphanyl)methane-κ2P:P′]bis[bromidocopper(I)] acetonitrile disolvate

Acta Crystallographica Section E: Crystallographic Communications, 2015
The reaction of cuprous bromide with a mixture of 1,1-bis(diphenylphosphanyl)methane (dppm: C25H22P2) and N-allylthiourea (ATU: C4H8N2S) in acetonitrile yielded the title solvated dinuclear complex, [Cu2Br2(C4H8N2S)(C25H22P2)2]·2C2H3N or [Cu2Br2(ATU ...
Mareeya Hemman, Chaveng Pakawatchai, Jaursup Boonmak, Sujittra Youngme, Saowanit Saithong   +4 more
doaj   +1 more source

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

The effect of hydrogen bonding on the π depletion and the π-π stacking interaction [PDF]

Non-covalent interactions such as hydrogen bonding and π–π stacking are essential types of interactions governing molecular self-assembly. The π–π stacking ability of aromatic rings depends on the electron density of the π orbitals, which is affected by ...
Sundholm, D, Johansson, MP, Ahmed, U
core   +1 more source

Stacking Principles on π- and Lamellar Stacking for Organic Semiconductors Evaluated by Energy Decomposition Analysis [PDF]

, 2018
Two stacking manners, that is, π- and lamellar stacking, are generally found for organic semiconductors, in which the π-stacking occurs between conjugated groups and the lamellar stacking refers to the separation of the conjugated and aliphatic moieties.
Vi-Hsiang Huang, Yu-Ying Lai (1393363), Hao-Ting Lee (6162089), Vi-Hsiang Huang (6162086), Hau-Ren Yang, Hau-Ren Yang (6162092), Hao-Ting Lee, Yu-Ying Lai   +7 more
core   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

A Comparative Theoretical Study of Picric Acid and Its Cocrystals

Crystals, 2015
A novel cocrystal of picric acid/acetophenone was prepared by solvent evaporation method and the crystal structure was characterized by single crystal X-ray diffraction. Analysis of the crystal structure shows that the hydrogen bonding, van der Waals and
Peng-Yuan Chen, Lin Zhang, Shun-Guan Zhu, Guang-Bin Cheng   +3 more
doaj   +1 more source

Self-Assembly and Electrical Conductivity of a New [1]benzothieno[3,2-b][1]-benzothiophene (BTBT)-Peptide Hydrogel

Molecules, 2023
The conjugation of small-molecule semiconductors with self-assembling peptides is a powerful tool for the fabrication of supramolecular soft materials for organic electronics and bioelectronics.
Anna Fortunato, Rafael Cintra Hensel, Stefano Casalini, Miriam Mba   +3 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source